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Deprecated kit (PN XK3-C-A2-UT-U or XK3-C-N1-UT-E)
Example: turn on an LED
Digi XBee® 3 Cellular LTE-M/NB-IoT Global Smart Modem User Guide
330
Example: turn on an LED
Note
This example is only for kits that use the XBIB-U-DEV development board. For an example that
uses the XBIB-CU-TH development board, see
1. Note the
DS4
LED on the XBIB board. The following image highlights it in a red box. The LED is
normally off.
2. At the MicroPython
>>>
prompt, type the commands below, pressing
Enter
after each one.
After entering the last line of code, the LED illuminates. Anything after a
#
symbol is a
comment, and you do not need to type it.
Note
You can easily copy and paste code from the
. Use caution with the
PDF version, as it may not maintain essential indentations.
import machine
from machine import Pin
led = Pin("D4", Pin.OUT, value=0)
# Makes a pin object set to output 0.
# One might expect 0 to mean OFF and 1 to mean ON, and this is normally the
case.
# But the LED we are turning on and off is setup as what is# known as
"active low".
# This means setting the pin to 0 allows current to flow through the LED and
then through the pin, to ground.
3. To turn it off, type the following and press
Enter
: